Environmental

South Dakota's climate includes harsh winters with extensive use of road salt and de-icing chemicals. These materials can cause environmental concern because:

AThey are classified as hazardous waste under RCRA
BThey can contaminate groundwater near roads and cause salt damage to trees and vegetation✓ Correct
CDENR prohibits their use near private wells
DThey react with radon to create toxic compounds

Explanation

Road salt (sodium chloride) and other de-icing chemicals can leach into groundwater and surface water, causing chloride contamination, and can damage vegetation, infrastructure, and aquatic ecosystems.

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